Flight number record

DL 377

Delta Air Lines · Anchorage to Minneapolis

Route: ANC → MSP
Departs: 21:15
Flights: 361
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 377, check with Delta Air Lines.

DL 377 lands a B+, 5 points better than the national rate of 77.6%. About one flight in six arrives 15 minutes late or worse, and those flights are late by about 2.1 hours on average. That is a workable record, not a spotless one. That rests on 361 flights, with a median arrival 9 minutes early.

Set against the rest of the country, DL 377's record is 5 points better than the US average of 77.6%. That gap is worth roughly 49 fewer late arrivals for every thousand flights.

On time

82.5%

Arrivals under 15 minutes late, of 359 completed flights

Avg delay

125 min

Across delayed arrivals only, not all flights

Cancelled

0.55%

National rate is 1.81%

1 hour+ late

7.0%

National rate is 8.1%

These figures cover 361 flights between July 2025 and June 2026. The median arrival is 9 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.

Schedule

When DL 377 flies

DL 377 flies ANC to MSP without a single fixed slot. Its most common scheduled departure was 21:15, used on 136 of 361 flights, with 21:45 (71 flights) and 22:08 (42 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 21:15136 flights37.7%
Departs 21:4571 flights19.7%
Departs 22:0842 flights11.6%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.

A 21:15 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and DL 377 runs 12 points better at 82.5%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

DL 377 next to ANC to MSP

Every carrier on ANC to MSP combined arrived on time 83.9% of the time across 781 flights, so DL 377 is about level with it. Delta flew 706 flights on the same city pair under all its flight numbers, including this one, and those ran 83.2% on time. Across its whole network Delta Air Lines managed 81.6%, close to this flight's figure.

DL 377 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 377thin sample	361	82.5%	125 min	0.55%	B+
All Delta Air Lines on ANC–MSP	706	83.2%	113 min	0.57%	B+
All carriers on ANC–MSP	781	83.9%	108 min	0.51%	B+
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 377 quarter by quarter

DL 377 did not run the same all year. Its best quarter was Jan–Mar 2026 at 87.5% on time and its weakest Apr–Jun 2026 at 74.7%, a swing of 13 points on roughly 90 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.

Jul–Sep 202592 flights81.5%
Oct–Dec 202588 flights86.4%
Jan–Mar 202690 flights87.5%
Apr–Jun 202691 flights74.7%

Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, DL 377 ranged from 78.8% on Monday to 88.2% on Thursday. With about 52 flights behind each day, a spread of 9 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why DL 377 runs late

One category carries most of the weight here. Carrier accounts for 56% of the 7,889 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Carrier
56%
Late-arriving aircraft
38%
National Airspace System
4%
Extreme weather
2%

38% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 7,889 reported delay minutes here, that single category outweighs weather by 21 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 7,889 delay minutes reported on DL 377.

Cancellations are rare at 0.55%, below the national 1.81% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.

Connections and routes

What a delay on this flight costs

7.0% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about 2.1 hours, which a normal layover absorbs.

At 2,519 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.

The same number turns up on one other city pair in the data, including MSP to ANC (211), but none flew often enough under DL 377 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to ANC to MSP only.

One caution: this is a thin sample. 361 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.

What to do with this

Booking DL 377

For a booking, read DL 377 as 82.5% on time with 0.55% cancelled over 361 flights. Those are rates from the past twelve months, not a forecast for any particular day.

Where to go next

A flight number here means Delta Air Lines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.

Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures